I'm sure this is well known, but I recently encountered this problem for the second time.
--- foo: import oslo.config as cfg import bar CONF = cfg.CONF CONF.register_opts('foo_opt') --- bar: import oslo.config as cfg CONF = cfg.CONF def bar_func(arg=CONF.foo_opt): pass --- importing foo results in an error in bar because CONF.foo_opt doesn't exist. This is because bar is imported before CONF.register_opts. CONF.import_opt() fails in the same way because it just imports foo and hits the exact same problem when foo imports bar. A (the?) solution is to register_opts() in foo before importing any modules which might also use oslo.config. This also allows import_opt() to work in bar, which you should do to remove any dependency on import order: --- foo: import oslo.config as cfg CONF = cfg.CONF CONF.register_opts('foo_opt') import bar --- bar: import oslo.config as cfg CONF = cfg.CONF CONF.import_opt('foo_opt', 'foo') def bar_func(arg=CONF.foo_opt): pass --- Even if it's old news it's worth a refresher because it was a bit of a headscratcher. Matt -- Matthew Booth Red Hat Engineering, Virtualisation Team Phone: +442070094448 (UK) GPG ID: D33C3490 GPG FPR: 3733 612D 2D05 5458 8A8A 1600 3441 EA19 D33C 3490 _______________________________________________ OpenStack-dev mailing list OpenStackemail@example.com http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev